Analysis of Mass Spectrometry Characteristics of Multi-branched Saturated Fatty Acids and Contents in Marine Animals

doi:10.11869/hnxb.2013.03.0334

J4 ›› 2013, Vol. ›› Issue (3): 334-339.DOI: 10.11869/hnxb.2013.03.0334

• FOOD IRRADIATION·FOOD SCIENCE • Previous Articles Next Articles

Analysis of Mass Spectrometry Characteristics of Multi-branched Saturated Fatty Acids and Contents in Marine Animals

LOU Qiao-ming^1,2, YANG Wen-ge¹, XU Da-lun¹, ZHENG Xian-meng¹, XUE Chang-hu²

1. School of Marine Science, Ningbo University, Ningbo, Zhejing 315211;
2. College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong 266003

Received:2012-05-31 Revised:2012-12-31 Online:2013-03-28 Published:2013-03-29

多支链饱和脂肪酸质谱特征及其在海洋动物中的含量分析

楼乔明^1,2, 杨文鸽¹, 徐大伦¹, 郑贤孟¹, 薛长湖²

1. 宁波大学海洋学院, 浙江宁波 315211;
2. 中国海洋大学食品科学与工程学院, 山东青岛 266003

通讯作者: 薛长湖(1964-),男,江苏兴化人,博士,教授,从事水产利用化学研究。Tel:0532-82032468;E-mail:xuech@ouc.edu.com
基金资助:
"泰山学者"建设工程专项经费,海洋公益性行业科研专项(201105029),国家自然科学基金项目(31201283),宁波市自然科学基金项目(2012A610136)

Abstract

Abstract:

The fragmentation rule and mass spectrometry characteristics of 4,8,12-trimethyltridecanoic acid methyl ester, 2,6,10,14-tetramethylpentadecanoic acid methyl ester, and 3,7,11,15-tetramethylhexadecanoic acid methyl ester were studied, and also the compositions of multi-branched saturated fatty acids of marine organisms were analyzed in this paper. The results indicated that the Methyl branched chain in multi-branched saturated fatty acids could be accurately located by the difference between two strong fragment ions ([-CH(CH₃)-], namely the difference of 28 in mass-to-charge ratio). Meanwhile, multi-branched saturated fatty acids could be analyzed and identified using molecular ions, McLafferty rearrangement ions and other characteristic ions. Marine animals had a low multi-branched saturated fatty acids content, which was generally far below 0.1%. However, Haliotis discus hannai Ino, Haliotis diversicolor Reeve and other marine shellfishes, codfish and Antarctic krill showed differences in the accumulation and tissues to multi-branched saturated fatty acids.

Key words: Multi-branched saturated fatty acids, Mass spectrum characteristics, Marine animals, Contents

摘要：

采用气相色谱-质谱法对4,8,12-三甲基十三烷酸甲酯、2,6,10,14-四甲基十五烷酸甲酯和3,7,11,15-四甲基十六烷酸甲酯的断裂规律和质谱特征进行分析归纳,并对常见海洋动物中的上述3种多支链饱和脂肪酸含量进行分析。试验结果表明:依据有机质谱学规律,通过较强碎片离子间相差[-CH(CH₃)-](即离子质荷比相差28)能准确分析出多支链饱和脂肪酸中甲基支链所处碳链位置,同时结合分子离子以及麦氏重排离子等特征离子能准确有效地对多支链饱和脂肪酸进行分析鉴定。对多种海洋动物分析发现,海洋动物中多支链饱和脂肪酸的含量较低,一般在0.1%以下,但皱纹盘鲍、杂色鲍等海洋贝类以及鳕鱼、南极磷虾等海洋动物对多支链饱和脂肪酸表现出不同的积累作用和组织差异性。

关键词: 多支链饱和脂肪酸, 质谱特征, 海洋动物, 含量

LOU Qiao-ming, YANG Wen-ge, XU Da-lun, ZHENG Xian-meng, XUE Chang-hu. Analysis of Mass Spectrometry Characteristics of Multi-branched Saturated Fatty Acids and Contents in Marine Animals[J]. J4, 2013, (3): 334-339.

楼乔明, 杨文鸽, 徐大伦, 郑贤孟, 薛长湖. 多支链饱和脂肪酸质谱特征及其在海洋动物中的含量分析[J]. J4, 2013, (3): 334-339.

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创刊：1987年
主管部门：农业农村部
主办单位：中国原子能农学会与中国农业科学院农产品加工研究所（前中国农业科学院原子能利用研究所）
ISSN：1000-8551

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Analysis of Mass Spectrometry Characteristics of Multi-branched Saturated Fatty Acids and Contents in Marine Animals

多支链饱和脂肪酸质谱特征及其在海洋动物中的含量分析

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